|A Dunker in one of the two acceptable colors.|
The breed is meant to be somewhat heavily built, durable, and should have endurance. The standard seems to emphasize characteristics required for a successful working hound, including such traits as a muscular build, "wide nostrils," and a hard coat covering durable skin. The breed should be good-natured, with aggressiveness being the only other trait that can disqualify a dog.
The only health information that I could find on the breed is that it can sometimes have hip dysplasia.
Sources are the Fédération Cynologique Internationale, Pet Health & Care, and Dr. Bruce Fogle's The New Encyclopedia of the Dog. Image is from Wikimedia Commons under a Creative Commons license.